function [ x_new ] = Matrix_FourPointAvarage( x1,x2,x3,x4,omega )
% Input:
% x(4,:,:)
% x = [i-1 i i+1 i+2] (the four adjacency matrices)
% omega is the tension parameter
%-----------------------------------------------------------------
% Nir Sharon 21-05-12
%-----------------------------------------------------------------

x_new = GM2(GM2(x2,x3,.5),GM2(x1,x4,.5),-2*omega);

end